Yes that is odd but in the past years it's never been on the back of the card. Let me see if i can scan the image put it in paint and circle the satchel i'm talking about, it's there. Between him his arm and the table, and a brown string type element coming from under his pinky finger and the coffee mug

I believe that is just a shadow under his arm, and dark shadow/chair you see behind him under his arm. Not a satchel. Some of this thread is very entertaining.